| Title |
A Study of Residence Time Calculation Methods in Decay Tank Design |
| Authors |
Minkyu Jung ; Kyoungwoo Seo ; Seonghoon Kim |
| DOI |
https://dx.doi.org/10.6110/KJACR.2017.29.5.220 |
| Keywords |
감쇠탱크 ; 체류시간 ; 유선 ; 입자 ; 추적자 Decay tank ; Residence time ; Streamline ; Particle ; Tracer |
| Abstract |
In this study we apply and compare a variety of numerical methods for calculating residence time distribution in decay tanks, a major design component in the for reducing N-16 radioactivity. Our research group has used a streamlined method using user-defined particle numbers. However, this streamlined method has several problems, including low exiting particle ratios, particle diminishing, and unphysical time distribution, among others. We utilize three numerical methods to establish residence time and time distribution (streamlined, discrete phase method [DPM], and user defined scalar [UDS]) and subsequently compare the averaged results of each. The three tests demonstrate the flow features within the decay tanks, which are then numerically simulated to enable comparison. We conclude that although each simulation predicts similar time averages, the UDS methodology provides a smoother time distribution and tracer contour plots at specific times. |